Electrical condenser



H. F. CAUSEBROOKF ELECTRICAL CONDENSER.

APPLICAHCN FILED .IUNE I8, 1921.

Patented May 9, 1922.

ATTORNEY umrsn s T'ATE'S PATENT ()FEICE-r.

HENRY F. CAUSEBROOK, OF GREENFIELD, MASSACHUSETTS;

ELECTRICAL ccnnnnsnn.

To all whom it may concern: 1

Be it known that I, HENRY- F. OAUSE- BROOK, a citizen of" the United States of America, residin at Greenfield, in the county of F ranklln and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Electrical Condensers, ofuwhichthe following is a specimethod ofconstructing such condensers,

' an article that is shape.

whereby they may be readily formed of any suitable size, and at the same time produce preferably rectangular in I Heretofore it has been acommon practice to first form the condenser by rolling together' a strip of dielectric material (as paper) and a strip offconducting material (as tinfoil). This practice has been found tobe objectionable for the reason that when the roll is completed and subjected to pres .sure to produce a more or less rectangular shaped article, the dielectric and conducting materials are often embedded in each other, thus destroying or materially lessening the usefulness. The finished condenser is often broken or fractured and often times both the insulating and electric conducting material areinjured or broken. moreover, is further objectionable in that it can notbe repaired.

It has also been a common practice to construct condensers by forming or building them up with alternate layers of insulating material and tinfoil. This practice is objec tionable-because after the condenser is sub jec'ted to the usual final treatment of prescondenser.

Specification of Letters Patent.

- of tinfoil.-

strip is folded.

This practice,

Patented May 9, 1922.

' Application filed June 18, 1921. Serial No. 478,553.

Fig. 1 isan end elevational view showing the condenser in the process of construction, with the strip of dielectric material partially folded together in opposite directions to a form pockets to receive the pieces of tinfoil.

Fig. 2 is asectional view on the line 22 of Fig. 3. p F 3 is a perspective. view showing in outline the finished condenser.

Fig. 4 is a-detail view of one of the pieces Fig. 5'is a perspective view similar to Fig. i

1 prior to folding-the elements together.

. Fig. 6 shows the tin-foil applied before the Referring to the drawings in detail: 1

sulating or dielectric .material, aspaper coated with somesuitable-material,'which is folded or bent in opposite directions by any suitable means, as shown, at suitably spaced distances along its length; These folds or bonds are indicated at 2, 3, 4, 5, etc, The intermediate "portions of the strip between the folds are indicated by the ireference designates a continuous strip of suitable in numerals 6, 7, 8, 9, 10, etc. Thes epertially folded portions of the strip serve to form V-shaped pockets 11, 12, 13, 14, 15, etc.,-to permit the ready insertion of the pieces of conducting material.- I t v The strip .1 may, if desired, have tlie pieces of conducting material, indicated at 1 6, 17, 18, 19, 20, etc-., applied thereto by any suitable means before it is folded, orthese pieces of tinfoil maybe inserted in the pockets 11,

12, 13, 14:, and 15 after it is partially folded,

as shown in Fig. 1.- Any suitable adhesive is employed to cause the pieces of tinfoil to readily adhere to'the opposite sides of the strip 1, and either before or after the folding operation, as desired. In any instance, however, the pieces of tinfoil are encased within a pocket like compartment or receptacle which is produced; after the folding operation and difficulty in locating and repairing the 1 After a suitable length of insulating strip and-pieces of tinfoil have been assembled,

- bends 3. l. and 5 by having the strips of insulating, material bent or "folded around these inner ends or eds as indicated at the points 2, 3. l, and 5, thereby thoroughly preventing the charge from creeping or jumping across the inner edges ot' the pieces of tinfoil. This "feature is clearly shown in Fi a 2.

Enother important feature is in permitting the finished condenser to be readily opened or unfolded. as shown in Fig. 5, should a defect or break occur in any portion o'l its lenqth. After it has been opened or extended 1'01 inspection it can then be very readily repaired by anyone skilled in the art.

It-will also be observed that the outer edges of the pieces of tinfoil extend in opposite directions, whereby electrical connection may be very readily made with these edges when the condenser is in use.

The. folded strip will closely enp opposite surfaces of the tinfoil shown in Figs. 2 and The iinal step in the process of forming the condenser'is to close e the eces. as

or push the pockets together and thereby encxse the pieces or conducting material which are inserted in the pockets. The tinal sh: of the condenser is shown in dotted outline in 3, by the lines 21. 22, and 2 7-.

hat I claim is:

1. An elect e condenser. continuous strip of dielectric material formed with bonds or folds therein along its length to l'orm pocket-like receptacles. an individual piece of electric conducting 11111-- terial in each pocket and on opposite sides comp risin g a of the strip and extending from one bend or told to the next bend or told of the strip, the outer ends of the pieces projecting beyond the bends or :lolds to form terminals.

2. An electric condenser, comprising a continuous strip of dielectric material formed with bends along its length to term pocket-like receptacles, an individual piece of electric conducting material in each olf' said pockets and on opposite sides of the strip, the piece having one of its ends engaging or close to a bend and its outer end projecting beyond wo adjacent bonds to form terminals, said bent strip being closely in contact with the opposite sides of said pieces. 3. An electrical condenser comprising a sh qjle strip of folded insulated materi l and a single or individual piece of electrical conducting material between the adjacent folds and projecting from opposite edges of the folded strip.

a. The method or process of constructing an electric condenser which consists in applying individual pieces oi? conducting material to the opposite sides of a single strip of insulating material and after theapplication of such pieces folding the strip in op posite directions to form substantially closed pocket-like receptacles for .encasing the conducting material between the folds of the strip.

5. An electrical condenser having its dielectric material consisting of a single strip that is folded in opposite directions along its length t9 form pockets to receive the conducting material said conducting material comprising individual pieces and said strip being foldel around one end of the pieces of conducting material and against the oposite sides of the same and the opposite ends of the conducting material. projecting in opposite directions and beyond the 'biildcd or bent portions of the strip as described.

0. A folded condenser comprising a single strip ot dielectric nniterial to form pocket-like receptacles and iinliridual piece- (11' electri conducting iuuierial in said re- \"i'llJiZiClLb and pro'iectiiu: beyond the opposite sides oi the finished article. 

